[Editor’s Note: This is part of an ongoing series of stories in which the ABC15 Investigators and the Arizona Center for Investigative Reporting collaborated to explore how Arizona regulates the storage and transportation of hazardous chemicals across the...

[Editor’s Note: This is part of a series of stories in which the ABC15 Investigators and the Arizona Center for Investigative Reporting collaborated to explore how Arizona regulates the storage and transportation of hazardous chemicals across the state.] By...

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